A color table is modulated. The color table includes a plurality of nodes, and each node corresponds with a color input in the first color space and provides a print output in a second color space. The set of the plurality of nodes are arranged in a vector of a first color perception parameter. The vector can be arranged according to an order of increasing second color perception parameter in the first color space to an end node of the set of the plurality of nodes. A node in the set of the plurality of nodes that provides a peak amount of the second color perception parameter on the medium is determined. The print output for the end node is replaced with a print output corresponding with the node that provides the peak amount of the second color perception parameter on the medium.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method, comprising: receiving a color table having a plurality of nodes, each node corresponding with a color input in a first color space and providing a print output in a second color space to a medium, a set of the plurality of nodes arranged in a vector of first color perception parameter according to an order of an increasing second color perception parameter in the first color space from an initial node in the vector of the set of the plurality of nodes having a least amount of the second color perception parameter in the first color space of the first color perception parameter in the vector to an end node in the vector of the set of the plurality of nodes having a greatest amount of the second color perception parameter in the first color space of the first color perception parameter in the vector; determining a node in the vector of the set of the plurality of nodes providing a peak amount of the second color perception parameter in the second color space on the medium; and replacing a print output in the second color space corresponding with the end node in the vector with a print output in the second color space corresponding with the node in the vector of the set of the plurality of nodes providing the peak amount of the second color perception parameter in the second color space on the medium.
2. The method of claim 1 wherein the first color space is a red-green-blue color space.
3. The method of claim 1 wherein the second color space is cyan-magenta-yellow.
4. The method of claim 1 wherein the first color perception parameter is hue and the second color perception parameter is chroma.
5. The method of claim 1 wherein the color vector corresponds with a primary color in the second color space.
6. The method of claim 1 including a plurality of color vectors corresponding with primary and secondary colors of the second color space.
7. The method of claim 1 wherein the print output corresponds with a thermal energy profile applied via a thermal printhead.
8. The method of claim 1 including adjusting the replaced print output based on a hue angle of the set of nodes of the plurality of nodes in the vector.
9. The method of claim 1 including calibrating the nodes of the color table based on the replaced print output.
10. The method of claim 1 wherein the color vector is arranged from blue to black and the second color perception parameter is chroma.
11. A system, comprising: a memory to store a set of instructions; and a processor to execute the set of instructions to: receive a color table for an energy-imaging printing device, the color table having a plurality of nodes, each node corresponding with a color input in a first color space and providing a print output in a second color space to a medium, a set of the plurality of nodes arranged in a vector of first color perception parameter, the vector according to an order of an increasing second color perception parameter in the first color space from an initial node in the vector of the set of the plurality of nodes having a least amount of the second color perception parameter in the first color space of the first color perception parameter in the vector to an end node in the vector of the set of the plurality of nodes having a greatest amount of the second color perception parameter in the first color space of the first color perception parameter in the vector; determine a node in the vector of the set of the plurality of nodes providing a peak amount of the second color perception parameter in the second color space on the medium; and replace a print output in the second color space corresponding with the end node in the vector with a print output in the second color space corresponding with the node in the vector of the set of the plurality of nodes providing the peak amount of the second color perception parameter in the second color space on the medium.
12. The system of claim 11 including instructions to measure chroma of a printed patch corresponding with each node of the set of nodes in the color vector.
13. The system of claim 12 including instructions to measure hue angle of the printed patch corresponding with each node of the set of nodes in the color vector.
14. A non-transitory computer readable medium to store computer executable instructions to control a processor to: receive a color table having a plurality of nodes, each node corresponding with a color input in a first color space and providing a print output in a second color space to an energy-activated medium, a set of the plurality of nodes arranged in a vector of first color perception parameter, the vector according to an order of an increasing second color perception parameter in the first color space from an initial node in the vector of the set of the plurality of nodes having a least amount of the second color perception parameter in the first color space of the first color perception parameter in the vector to an end node in the vector of the set of the plurality of nodes having a greatest amount of the second color perception parameter in the first color space of the first color perception parameter in the vector; determine in the vector a node of the set of the plurality of nodes providing a peak amount of the second color perception parameter in the second color space on the energy-activated medium; and replace a print output in the second color space corresponding with the end node in the vector with a print output in the second color space corresponding with the node in the vector of the set of the plurality of nodes providing the peak amount of the second color perception parameter in the second color space on the energy-activated medium.
15. The non-transitory computer readable medium of claim 14 including instructions to rescale the set of nodes in the vector based on the replaced print output corresponding with the end node.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
May 15, 2019
June 14, 2022
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.